Which term is not among the three types of unauthorized landings?

• A. Emergency
• B. Inadvertent
• C. Intentional
• D. Diversion

Answer: (D)

Unauthorized landings are categorized as emergency, inadvertent, and intentional. An emergency landing happens when the pilot must land immediately to address a life-threatening situation or urgent safety issue, even if clearance isn’t possible in time. An inadvertent landing is unplanned and results from confusion or miscommunication, leading to landing without the intended clearance. An intentional unauthorized landing is a deliberate act to land without proper clearance, though it carries serious safety and regulatory consequences. Diversion, on the other hand, refers to directing a flight to land at a different, approved field under proper coordination, not to landing without clearance. So the term that doesn’t belong is diversion.